Sets the motor speed in rotations per minute (RPMs). This function doesn't make the motor turn, just sets the speed at which it will when you call step().

rpms: the speed at which the motor should turn in rotations per minute - a positive number (long)

None

• Stepper(steps, pin1, pin2)
• Stepper(steps, pin1, pin2, pin3, pin4)
• step(steps)

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